1 /*
   2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #include "precompiled.hpp"
  25 #include "memory/metaspace/spaceManager.hpp"
  26 
  27 using metaspace::internals::SpaceManager;
  28 
  29 // The test function is only available in debug builds
  30 #ifdef ASSERT
  31 
  32 #include "unittest.hpp"
  33 
  34 
  35 static void test_adjust_initial_chunk_size(bool is_class) {
  36   const size_t smallest = SpaceManager::smallest_chunk_size(is_class);
  37   const size_t normal   = SpaceManager::small_chunk_size(is_class);
  38   const size_t medium   = SpaceManager::medium_chunk_size(is_class);
  39 
  40 #define do_test(value, expected, is_class_value)                                 \
  41     do {                                                                         \
  42       size_t v = value;                                                          \
  43       size_t e = expected;                                                       \
  44       assert(SpaceManager::adjust_initial_chunk_size(v, (is_class_value)) == e,  \
  45              "Expected: " SIZE_FORMAT " got: " SIZE_FORMAT, e, v);               \
  46     } while (0)
  47 
  48     // Smallest (specialized)
  49     do_test(1,            smallest, is_class);
  50     do_test(smallest - 1, smallest, is_class);
  51     do_test(smallest,     smallest, is_class);
  52 
  53     // Small
  54     do_test(smallest + 1, normal, is_class);
  55     do_test(normal - 1,   normal, is_class);
  56     do_test(normal,       normal, is_class);
  57 
  58     // Medium
  59     do_test(normal + 1, medium, is_class);
  60     do_test(medium - 1, medium, is_class);
  61     do_test(medium,     medium, is_class);
  62 
  63     // Humongous
  64     do_test(medium + 1, medium + 1, is_class);
  65 
  66 #undef test_adjust_initial_chunk_size
  67 }
  68 
  69 TEST(SpaceManager, adjust_initial_chunk_size) {
  70   test_adjust_initial_chunk_size(true);
  71   test_adjust_initial_chunk_size(false);
  72 }
  73 
  74 #endif // ASSERT